Moment duration

Source: https://stackoverflow.com/questions/18623783/get-the-time-difference-between-two-datetimes/34672015

moment.duration(now.diff(then)).humanize()

public getDurationText(date1, date2) {

if (!date1) {

return '';

}

// check null date2 (is current date)

const date2Tmp = date2 ? date2 : new Date();

// return

return moment.duration(moment(date2Tmp).diff(moment(date1))).humanize();

}

Moment: How to prevent “Invalid date”?

Source: https://stackoverflow.com/questions/28993107/momentjs-how-to-prevent-invalid-date

If your goal is to find out whether you have a valid date, use Moment's isValid:

var end_date_moment, end_date;
jsonNC.end_date = jsonNC.end_date.replace(" ", "T");
end_date_moment = moment(jsonNC.end_date);
end_date = end_date_moment.isValid() ? end_date_moment.format("L") : "";

...which will use "" for the end_date string if the date is invalid.

Moment format pattern cheatsheet

https://devhints.io/moment

Date

d	0..6	Weekday
dd	Su
ddd	Sun
dddd	Sunday
YY	13	Year
YYYY	2013
M	1..12 (Jan is 1)	Month
Mo	1st..31st
MM	01..12 (Jan is 1)
MMM	Jan
MMMM	January
Q	1..4	Quarter
Qo	1st..4th
D	1..31	Day
Do	1st..31st
DD	01..31
DDD	1..365	Day of year
DDDo	1st..365th
DDDD	001..365
w	1..53	Week of year
wo	1st..53rd
ww	01..53

Time

H	0..23	24h hour
HH	00..23
h	1..12	12h hour
hh	01..12
m	0..59	Minutes
mm	00..59
s	0..59	Seconds
ss	00..59
a	am	AM/PM
A	AM
Z	+07:00	Timezone offset
ZZ	+0730
S	0..9	Deciseconds
SS	00..99	Centiseconds
SSS	000..999	Milliseconds
X  x		Unix timestamp Miliseconds Unix timestamp

Presets

LT	8:30 PM
LTS	8:30:25 PM
LL	August 2 1985
ll	Aug 2 1985
LLL	August 2 1985 08:30 PM
lll	Aug 2 1985 08:30 PM
LLLL	Thursday, August 2 1985 08:30 PM
llll	Thu, Aug 2 1985 08:30 PM

Examples

Date

YYYY-MM-DD	2014-01-01
dddd, MMMM Do YYYY	Friday, May 16th 2014

Time

hh:mm a

12:30 pm

Used by Moment.js and date-fns/format. Similar to Java SimpleDateFormat.

Get Date object from Moment

Source: https://stackoverflow.com/questions/17987647/moment-js-transform-to-date-object

Use this to transform a moment object into a date object:

From http://momentjs.com/docs/#/displaying/as-javascript-date/

moment().toDate();

Yields:

$(function(){
  setInterval(function(){
    var divUtc = $('#divUTC');
    var divLocal = $('#divLocal');  
    //put UTC time into divUTC  
    divUtc.text(moment.utc().format('YYYY-MM-DD HH:mm:ss'));      
    
    //get text from divUTC and conver to local timezone  
    var localTime  = moment.utc(divUtc.text()).toDate();
    localTime = moment(localTime).format('YYYY-MM-DD HH:mm:ss');
    divLocal.text(localTime);  
      
    $('#divThai').text(moment.tz('Asia/Bangkok').format('YYYY-MM-DD HH:mm:ss'));
    $('#divUsa').text(moment.tz('America/Los_Angeles').format('YYYY-MM-DD HH:mm:ss'));
  },1000);
});

Tue Nov 04 2014 14:04:01 GMT-0600 (CST)

var myDateObj = new Date(2011, 9, 16);
var now = moment(myDateObj);
#Now convert it back to date object
var newDateObj = new Date(now.format("YYYY-MM-DDTHH:mm:ssZ"));

This might be a delayed response.But, I think it can help others who still needs an answer.

https://momentjs.com/guides/#/lib-concepts/internal-properties/

To retrieve a native Date object from Moment, use .toDate()

You can directly get the Date object from Moment.